First of all we are deeply sorry for the trouble that you've been through.
Our products are made with 95% Rayon Modal and 5% spandex. This means it is a semi-synthetic cellulose fiber made by spinning reconstituted cellulose. This is a very high quality fabric made in the US that is thin yet durable and very soft on the skin. This material does not fade nor shrink. The spandex makes our products stretchy and comfortable.
We recommend the size that is listed in the ViV Collection chart size, not the Amazon one. Also, all ViV Collection products are made and shipped from the US and only sold by ViV Collection. Other sellers apart from ViV Collection will sell a cheaper quality clothing and the sizes may run differently.
If you have received the one with different spec, it must be either a defective goods or was bought from different seller. Please contact our customer service team we would be happy to help you anytime.